Optimal spiral phase modulation in Gerchberg-Saxton algorithm for wavefront reconstruction and correction

Baránek, Michal; Běhal, Jaromír; Bouchal, Zdeněk

doi:10.1117/12.2305344

“…Since there are many phase solutions that could result in the same intensity distribution as seen on the camera. Since the early seminal work, the approach has been used with scalar vortex beams as the probe to correct optical aberrations on DMDs [113], optical trapping systems [188] and OAM-based optical communication systems [165], [189].…”

Section: Correction Schemesmentioning

confidence: 99%

Structured Light in Turbulence

Cox

¹

,

Mphuthi

²

,

Nape

³

et al. 2021

IEEE J. Select. Topics Quantum Electron.

View full text Add to dashboard Cite

Optical communication is an integral part of the modern economy, having all but replaced electronic communication systems. Future growth in bandwidth appears to be on the horizon using structured light, encoding information into the spatial modes of light, and transmitting them down fibre and free-space, the latter crucial for addressing last mile and digitally disconnected communities. Unfortunately, patterns of light are easily distorted, and in the case of free-space optical communication, turbulence is a significant barrier. Here we review recent progress in structured light in turbulence, first with a tutorial style summary of the core concepts, before highlighting the present state-of-the-art in the field. We support our review with new experimental studies that reveal which types of structured light are best in turbulence, the behaviour of vector versus scalar light in turbulence, the trade-off of diversity and multiplexing, and how turbulence models can be exploited for enhanced optical signal processing protocols. This comprehensive treatise will be invaluable to the large communities interested in free-space optical communication with spatial modes of light.

show abstract

“…Since there are many phase solutions that could result in the same intensity distribution as seen on the camera. Since the early seminal work, the approach has been used with scalar vortex beams as the probe to correct optical aberrations on DMDs [92], optical trapping systems [168] and OAM-based optical communication systems [146], [169].…”

Section: Correction Schemesmentioning

confidence: 99%

Structured Light in Turbulence

Cox,

Mphuthi,

Nape

et al. 2020

Preprint

View full text Add to dashboard Cite

Optical communication is an integral part of the modern economy, having all but replaced electronic communication systems. Future growth in bandwidth appears to be on the horizon using structured light, encoding information into the spatial modes of light, and transmitting them down fibre and free-space, the latter crucial for addressing last mile and digitally disconnected communities. Unfortunately, patterns of light are easily distorted, and in the case of free-space optical communication, turbulence is a significant barrier. Here we review recent progress in structured light in turbulence, first with a tutorial style summary of the core concepts, before highlighting the present state-of-the-art in the field. We support our review with new experimental studies that reveal which types of structured light are best in turbulence, the behaviour of vector versus scalar light in turbulence, the trade-off of diversity and multiplexing, and how turbulence models can be exploited for enhanced optical signal processing protocols. This comprehensive treatise will be invaluable to the large communities interested in free-space optical communication with spatial modes of light.

show abstract